From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Subject: [PATCH 26/52] linux: Add recvvmsg fallback for 64-bit time_t SO_TIMESTAMP{NS}
Date: Fri, 5 Mar 2021 17:14:52 -0300 [thread overview]
Message-ID: <20210305201518.798584-27-adhemerval.zanella@linaro.org> (raw)
In-Reply-To: <20210305201518.798584-1-adhemerval.zanella@linaro.org>
Handle the SO_TIMESTAMP{NS} similar to recvmsg: for
!__ASSUME_TIME64_SYSCALLS it converts the first 32-bit time SO_TIMESTAMP
or SO_TIMESTAMPNS and appends it to the control buffer if has extra
space or returns MSG_CTRUNC otherwise. The 32-bit time field is kept
as-is.
Also for !__ASSUME_TIME64_SYSCALLS it limits the maximum number of
'struct mmsghdr *' to IOV_MAX (and also increases the stack size
requirement to IOV_MAX times sizeof (socklen_t)). The Linux imposes
a similar limit to sendmmsg, so bound the array size on recvmmsg is not
unreasonable. And this will be used only on older when building with
32-bit time support.
Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).
---
sysdeps/unix/sysv/linux/recvmmsg.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/recvmmsg.c b/sysdeps/unix/sysv/linux/recvmmsg.c
index 672ba20332..5cd107ffa9 100644
--- a/sysdeps/unix/sysv/linux/recvmmsg.c
+++ b/sysdeps/unix/sysv/linux/recvmmsg.c
@@ -44,13 +44,26 @@ __recvmmsg64 (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
ts32 = valid_timespec64_to_timespec (*timeout);
pts32 = &ts32;
}
+
+ socklen_t csize[IOV_MAX];
+ if (vlen > IOV_MAX)
+ vlen = IOV_MAX;
+ for (int i = 0; i < vlen; i++)
+ csize[i] = vmessages[i].msg_hdr.msg_controllen;
+
# ifdef __ASSUME_RECVMMSG_SYSCALL
r = SYSCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, pts32);
# else
r = SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, pts32);
# endif
- if (r >= 0 && timeout != NULL)
- *timeout = valid_timespec_to_timespec64 (ts32);
+ if (r >= 0)
+ {
+ if (timeout != NULL)
+ *timeout = valid_timespec_to_timespec64 (ts32);
+
+ for (int i=0; i < r; i++)
+ __convert_scm_timestamps (&vmessages[i].msg_hdr, csize[i]);
+ }
#endif /* __ASSUME_TIME64_SYSCALLS */
return r;
}
--
2.25.1
next prev parent reply other threads:[~2021-03-05 20:17 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 20:14 [PATCH 00/52] Add 64 bit time support on legacy ABIs Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 01/52] io: Use temporary directory and file for ftwtest-sh Adhemerval Zanella via Libc-alpha
2021-03-05 20:56 ` Andreas Schwab
2021-03-05 23:53 ` Joseph Myers
2021-03-08 13:00 ` Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 02/52] linux: Add futimes test Adhemerval Zanella via Libc-alpha
2021-03-05 20:30 ` Florian Weimer via Libc-alpha
2021-03-08 13:01 ` Adhemerval Zanella via Libc-alpha
2021-03-08 13:08 ` Florian Weimer via Libc-alpha
2021-03-08 13:26 ` Adhemerval Zanella via Libc-alpha
2021-03-08 13:30 ` Florian Weimer via Libc-alpha
2021-03-05 20:33 ` Florian Weimer via Libc-alpha
2021-03-08 13:02 ` Adhemerval Zanella via Libc-alpha
2021-03-08 13:23 ` Adhemerval Zanella via Libc-alpha
2021-03-06 0:02 ` Joseph Myers
2021-03-06 3:52 ` Paul Zimmermann
2021-03-08 13:03 ` Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 03/52] linux: Add lutimes test Adhemerval Zanella via Libc-alpha
2021-03-05 20:31 ` Florian Weimer via Libc-alpha
2021-03-06 0:02 ` Joseph Myers
2021-03-05 20:14 ` [PATCH 04/52] time: Add getitimer and setitimer basic tests Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 05/52] time: Add gmtime/gmtime_r tests Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 06/52] time: Add timegm/timelocal basic tests Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 07/52] time: Add basic timespec_get tests Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 08/52] time: Add 64 bit tests for getdate / getdate_r Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 09/52] io: Add basic tests for utimensat Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 10/52] posix: Add wait3 tests Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 11/52] linux: mips: Split libpthread.abilist in n32 and n64 Adhemerval Zanella via Libc-alpha
2021-03-05 20:39 ` Florian Weimer via Libc-alpha
2021-03-08 13:05 ` Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 12/52] linux: mips: Split librt.abilist " Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 13/52] linux: mips: Split libanl.abilist " Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 14/52] linux: s390: Add libanl.abilist in s390 and s390x Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 15/52] login: Consolidate utmp and utmpx headers Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 16/52] login: Move gnu utmpx to default implementation Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 17/52] Consolidate and simplify internal utmp definitions Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 18/52] support: Add 'touch' command Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 19/52] Add tests-container-internal rules Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 20/52] login: Add 64-bit time support to utmp/utmpx Adhemerval Zanella via Libc-alpha
2021-04-27 12:30 ` Florian Weimer via Libc-alpha
2021-04-27 13:58 ` Andreas Schwab
2021-04-27 14:18 ` Florian Weimer via Libc-alpha
2021-04-27 14:51 ` Andreas Schwab
2021-04-27 18:03 ` Joseph Myers
2021-04-30 10:03 ` Florian Weimer via Libc-alpha
2021-04-30 12:17 ` Andreas Schwab
2021-04-30 12:22 ` Florian Weimer via Libc-alpha
2021-04-30 14:11 ` Andreas Schwab
2021-03-05 20:14 ` [PATCH 21/52] linux: Add pwrite64_nocancel Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 22/52] login: Use 64-bit time on struct lastlog [BZ #25844] Adhemerval Zanella via Libc-alpha
2021-03-06 0:07 ` Joseph Myers
2021-03-08 13:05 ` Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 23/52] Remove __WORDSIZE_TIME64_COMPAT32 Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 24/52] linux: Add fallback for 64-bit time_t SO_{RCV, SND}TIMEO Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 25/52] linux: Add fallback for 64-bit time_t SO_TIMESTAMP{NS} Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` Adhemerval Zanella via Libc-alpha [this message]
2021-03-05 20:14 ` [PATCH 27/52] y2038: Add __USE_TIME_BITS64 support for time_t Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 28/52] y2038: Add __USE_TIME_BITS64 support for struct timeval Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 29/52] y2038: Add __USE_TIME_BITS64 support for struct timespec Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 30/52] y2038: Add __USE_TIME_BITS64 support for struct utimbuf Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 31/52] y2038: linux: Add __USE_TIME_BITS64 support for struct timex Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 32/52] y2038: Use a common definition for stat Adhemerval Zanella via Libc-alpha
2021-03-05 20:14 ` [PATCH 33/52] y2038: Use a common definition for msqid_ds Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 34/52] y2038: Use a common definition for semid_ds Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 35/52] y2038: Use a common definition for shmid_ds Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 36/52] y2038: Add __USE_TIME_BITS64 support for socket-constants.h Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 37/52] time: Add 64 bit time support for getdate Adhemerval Zanella via Libc-alpha
2021-03-08 21:27 ` Lukasz Majewski
2021-03-05 20:15 ` [PATCH 38/52] y2038: Add support for 64 bit time on legacy ABIs Adhemerval Zanella via Libc-alpha
2021-03-08 21:27 ` Lukasz Majewski
2021-03-05 20:15 ` [PATCH 39/52] posix: Add glob64 with 64 bit time_t support Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 40/52] io: Add fts64 " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 41/52] io: Add ftw64 " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 42/52] libsupport: Add 64 bit time_t support for time functions Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 43/52] libsupport: Add 64 bit time_t support for stat functions Adhemerval Zanella via Libc-alpha
2021-03-05 20:42 ` Florian Weimer via Libc-alpha
2021-03-08 13:06 ` Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 44/52] y2038: Add test coverage Adhemerval Zanella via Libc-alpha
2021-03-06 0:13 ` Joseph Myers
2021-03-08 13:12 ` Adhemerval Zanella via Libc-alpha
2021-03-08 21:28 ` Lukasz Majewski
2021-03-05 20:15 ` [PATCH 45/52] Use 64 bit time_t stat internally Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 46/52] debug: build pcprofiledump with LFS and 64 bit time support Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 47/52] elf: Use LFS and 64 bit time_t for installed programs Adhemerval Zanella via Libc-alpha
2021-03-05 20:43 ` Florian Weimer via Libc-alpha
2021-03-08 13:14 ` Adhemerval Zanella via Libc-alpha
2021-03-08 15:26 ` Florian Weimer via Libc-alpha
2021-03-05 20:15 ` [PATCH 48/52] iconv: " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 49/52] locale: " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 50/52] nss: " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 51/52] posix: " Adhemerval Zanella via Libc-alpha
2021-03-05 20:15 ` [PATCH 52/52] timezone: " Adhemerval Zanella via Libc-alpha
2021-03-05 23:57 ` [PATCH 00/52] Add 64 bit time support on legacy ABIs Joseph Myers
2021-03-08 13:18 ` Adhemerval Zanella via Libc-alpha
2021-03-07 10:42 ` Lukasz Majewski
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